public class J20240212 {
    public static void main(String[] args) {
        byte b = 10;
        System.out.println(b);
        System.out.println(Byte.MAX_VALUE);
        System.out.println(Byte.MIN_VALUE);
    }
    public static void mainfun3(String[] args) {
        short aaa = 10;
        System.out.println(aaa);
        System.out.println(Short.MIN_VALUE);
        System.out.println(Short.MAX_VALUE);
    }
    public static void mainfum2(String[] args) {
        long a = 10L;
        System.out.println(a);
        System.out.println(Long.MAX_VALUE);
        System.out.println(Long.MIN_VALUE);
    }
    public static void mainfun1(String[] args) {
        /*int aa = 10;
        int b;
        b = 10;
        System.out.println(b);//未基于初值时会报错
        */



    }
}

